vue3中route.meta拿不到

//onMounted

onMounted(()=>{

  nextTick(()=>{

  console.log(route.meta?.key) //undefined

  })

 

  setTimeout(()=>{

    console.log(route.meta?.key);//"1"

  },1000)

})

 

//通过watch监听获取

 watch(()=>route.meta?.key,(val)=>{

  console.log(route.meta?.key) //"1"

 },{once:true})

 

undefined原因：

useRoute未实例化完成